Dextee w



(No Model.)

D. W. PARKER.

EXTENSION LAMP.

No. 336,738. Patented Feb.

N. PEYERS, PhoXo-Lilhogrnpher. Washington. D. c.

UNITED STATES PATENT CrrIcE.

DEXTER WV. PARKER, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE CHAS. PARKERCOMPANY, OF SAME PLACE.

EXTENSION-LAMP.

SPECIFICATION forming part of Letters Patent No. 336,738, dated February23, 1886.

Application filed November 23, 1885. Serial X0. 183,590. No model.)

To (tZZ whom, it may concern:

. Be it known that I, DEXTER "W. PARKER, of Meriden, in the county ofNew Haven and State of Connecticut, haveinvented a new Improvement inExtension-Lamps; andI dohereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,

and which said drawings constitute part of this specification, andrepresent, in-

Figure 1, a vertical central section showing a side view of thelamp-frame and of the counterbalancing devices; Fig. 2, a modificationin I 5 the lamp-counterbalancing arrangement.

This invention relates to an improvement in that class of lamp-fixtureswhich consist of a single lamp with shade around it suspended from theceiling, and such as commonly called 10 hall-lamps, from their peculiaradaptation to entrance-halls in dwellings, and is an improvement uponthe invention for which Letters Patent of the United States No. 285,063were granted. In said patent a suspensionspring device is secured at theceiling, from which the entire fixture is supported. The lampholdingdevice is attached directly to the chain which extends from thesuspending device. The shade is adj ustably hung upon pul o leys appliedto the fixture directly, and so that the shade may be raised or loweredindependent of the lamp for the purpose of lighting; but as the lampitself is pulled down the shade follows it, so that, as the lamp issuspended at 5 a considerable height, if it be desired to light or trimthe lamp, the lamp, with the shade, is pulled downward to the desiredposition, then the shade raised, supported by its own independentcounter-balance, and when trimmed 0 the shade is returned, and then thefixture may be again raised to its place.

The object of this present invention is to enable' the lamp to be drawndown, as for the purpose of lighting or trimming, without necessarilymoving the shade, but yet so that the shade may be drawn down or raisedwith the lamp when it is desired to adjust the light to differentelevations; and it consists in the shade supported from acounterbalancing suspending device, combined with a lamp support orframe hung by a suspension device independent of the suspension devicewhich supports the shade, and whereby either may be moved independent ofthe other, and as more fully hereinafter described.

A represents the shade or casin g within which thelamp is arranged. Thisshade is suspended by a counterbalancing device, B above, attached tothe ceiling. This counterbalancing device, as here represented, is aspringbarrel, the construction of which is too well known to requireparticular description. From it two chains, C C, extend into connectionwith the shade below, and so that as the shade is drawn down the barrelwill be revolved and wind the spring, or, when raised, the reaction ofthe spring will aid in lifting the shade and support it at any elevationto which it may be placed.

D is the lamp-support below the shade, and from which, as hererepresented in Fig. 1, a loop or frame, E. extends up within the shadeand above the chimney. Thelampsupport is suspended,as represented inFig. 1,by aspringdrum, F, hung to the canopy which incloses the maincounter-balance B, and so that the lamp may be drawn downwardindependent of the shade, such downward movement imparting revolution tothe drum F, which winds the spring, and on the return of the lamp thereaction of the spring aids in that movement and supports the lamp inthe position to which it may be set.

By making the lamp holder and shade independent of each other andsuspended upon independent devices the lamp maybe drawn down withoutmovement of the shade for lighting or trimming, and then returned to itsplace, or the shade and lamp together may be drawn up or down andadjusted to anydesired elevation, and when so adjusted the lamp may bedrawn from the shade without disturbing that position.

The construction of the shade and its holding device is immaterial tothe invention, that shown in Fig. 1 being common and well known, andrequires no detailed description.

\Vhile I prefer to attach the suspending device for the lamp in a fixedposition, it may be hung upon supports in the chains which extend to theshade, as indicated in broken lines, Fig. 1, the broken linesrepresenting a bar connecting the two chains, and the drum as supportedin said bar. In this case there is the same independence of the shadeand lamp, but with this difference, that the suspending device for thelamp will always remain in the same relation to itthat is to say, if theshade be drawn down or raised, the suspending de vice for the lamp willmove with the shade; but when any desired position of the shade isattained then the suspending device for the lamp becomes fixed, and theoperation of the lamp is the same as if suspended from a permanentposition above.

Instead of employing a spriug'barrel as the suspension device for thelamp, the counterbalancing device may bein the form ofa weight, asrepresented in Fig. 2, G showing a weight within the shade A, from whichchains or cords a extend over pulleys b on the shade portion of thefixture down to the lamp-frame, and so that thelamp may be drawn downfrom the shade, and without moving the shade, the weight rising as thelamp is drawn down, and as seen in Fig. 2, or raised, as indicated inbroken lines, Fig. 2. The weight descends and stands at any point as acounterbalance for the lamp.

It will be understood that any of the known suspension devices may beemployed as the principal suspending device.

\Vhile specially designed for hall lights, in

which case the shade entirely incloses the lamp, 1

a flaring shade may be employed, asindicated in broken lines, Fig. 2,and form what is commonly called a library-lamp. I therefore do not wishto be understood as limiting my invention to any particular style ofshade, it only being essential that there shall be a shadesupportingframe in connection with the suspending device.

To further illustrate the advantages of this invention over the previousarrangements of extension lampfixtures a single illustration only willbe required. Supposing the fixture, as a whole, to stand in a desirableposition, as in the hall of a dwelling, the shade is usually heavy,ornamental, and expensive. In the usual constru'ctiomwhere the shade andthe lamp are dependent one upon the other that is, where they are hungtogcther-so that when the lamp is drawn down the shade will rise, insuch movement the shade is liable to many accidents, the concussion ofthe parts coming togetherthat is, when the shade falls as the lamprises-is double what it would be were the shade stationary and the lamponly movable. Again, in constructions where the lamp and shade are sohung as to be necessarily drawn down together and then the lamp removed,the shade is exposed to many accidents which could not occur were itleft in its elevated and normal position.

By making a shade and lamp independent of each other--that is, anindependent counterbalance for the lamp, whereby it may be moved down orup without movement of the shadethe lamp-support may be made very light,and therefore require but a very light counter-balance, and very muchlighter than can be done where the shade forms the counter-balance forthe lamp, and generally in extension lamp-fixturcs madein accordancewith this invention the capacity of the lamp-holder to be drawn down, asfor the purpose of lighting and trimming, leaving the shade in itsnormal position, will avoid many of the accidents to which the shade andfixture areliable when the shade performs the office of the counterbalance for the lamp-holder, or when the lamp holder and shade are fixedwith relation to each other and supported by a counterbalance common toboth.

From the foregoing it will be understood that I make no claim toanything shown or described in said Patent No. 285,063; but

\Vhat I do claim is- In an extension lamp-fixture, a shade-hold ingframe, a counter-balance above with connection therefrom to saidshade-holding frame, a lamp-support, and a second con nter-balanceindependent of the counterbalance of the shade, the said secondcounter-balance in connection with the said lamp-frame, substantially asdescribed, and whereby the down-and-up movement of the lamp may be madeindependent of the shade-holding frame, substantially as described.

DEXTER \V. PARKER. Witnesses:

WM. T. RIGHTMYER, J OSEPH H. BEOKETT.

